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(No Model.) 7 I J. H. BONN & A. DE BEVOISE.

COMBINED CHAIR, KNEE, A-ND TRUSS BRACKET. No. 282,697.

Patented Aug. '7,

ATTORNBYI UNITED STATES PATENT. Trice.

JOHN H. BONN, OF XVEEHAWKEN, AND ALFRED DE BEVOISE, OF WEST HOBOKEN,NEYV JERSEY.

COMBENED CHAIR, KNEE, AND TRUSS BRACKET.

SPECIFICATION formingpart of Letters Patent No. 282,697, dated August'7, 1883. Application filed Januar s), 1853. (No model.)

To all whom it may concern:

Be it known that we, JOHN H. BONN, of Weeha'wken, in the county ofHudson and State of New Jersey, and ALFRED DE BE- VOISE, of WVestHoboken, in the county of Hudson and State of New Jersey, have inventeda new and Improved Combined Chair, Knee, and Truss Bracket, of which thefollowing is a full, clear, and exact description.

7 The object of our invention is to provide a new and improved combinedchair, knee, and truss bracket for trestle-work, bridges, and otherframed structures.

The invention consists in the peculiar construction and arrangement ofparts, as hereinafter fully described, and pointed out in the claims.

Iteference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure is a longitudinal elevation of our improved combined knee, chair,and truss bracket, the supporting-beam being shown in cross-section.Fig. 2 is an end elevation of the same, the supported beam being shownin cross-section. Fig. 3 is a plan view of the same with the beamsremoved.

Atrough-shaped box, A, of the width of the beams B to be supported, iscast integral with a transverse inverted trough-shaped box, 0, of thewidth of the supporting-beam D, which is at an angle to the supportedbeams B, the said box 0 being adapted to fit on and straddle the beam D.Horizontal lugs E project from the outer surfaces of the sides of thebox A,at the bottoms of the same, and are braced and strengthened byinclined ribsF, extending from the upper edges of the sides of the boxto the ends of the lugs E and along the edges of the lugs, The lugs Eare adapted to rest on the transverse supporting-beam D, through whichand the lugs E'screw-bolts G are passed, as shown. Vertical lugs or jawsH extend from the ends of the under surface of the bottom of the box Ato the sides of the box 0, which lugs H preferably have their edgescurved, as shown. The ends of trussrods or tie-rods J, which brace andstrengthen the beams B in the usual manner, are pivoted by means ofsuitable pintles between the lugs or jaws H. -A series of bolts, K, arepassed through the sides of the box A and through the ends of thesupported beams B, and bolts L are passed through the sides of the box 0and through the supporting-beams D, which supporting-beams are supportedby posts or other suitable standards. The bottom of the box A isprovided with two apertures, M, outside of the sides of the box 0, whichapertures are connected by a longitudinal groove, N, in the uppersurface of the bottom of the box A, which groove N is crossed at anangle by a groove, 0. The groove N is inclined toward the apertures M.The box 0 straddles the supporting-beam D, and the ends of the supportedbeams l3 are placed in the box A in such a manner that they abut at themiddle of the same. The united boxes are then secured to the beams bymeans of the bolts K L. Scarfing or other splicing of the beams B is notrequired, and much wood is thus saved, and the framing isverymuchsimplified. The water that runs down the sides and abutting ends ofthe beams B collects on the bottom of the box A and flows off throughthe apertures M. r

The above-described combined chair, knee, and truss bracket can be usedfor railroad trestle-work, bridges, and all other framed work. The beamsB and brace-rods J form a continuous truss.

Having thus described our invent-ion, what we claim as new, and desireto secure by Letters Patent, is-

l.' A combined chair, knee, and truss bracket, consisting of atrough-shaped box, A, and a transverse inverted trough-shaped box, 0,the said boxes being made integral and the upper one provided withstrengthening-ribs, substantially as herein shown and described.

2. The united boxesA O at an angle to each other, constructed withhorizontal lugs E, projecting from the sides of the box A, at the bottomof the said sides, substantially as herein shown anddesoribed, and forthe purpose set forth.

3. The united boxes A O at an angle to each other, constructed withhorizontal lugs E, projecting from the sides of the box A,at the bottomof the same, and with the ribs F, extending from the upper edges of thesides of the box A to the ends of the lugs E, substantially as hereinshown and described, and for the purpose set forth.

4. The united boxesA G, constructed with lugs or jaws H, extendingfronrthe ends of the under surface of the bottom of the boxAto the sidesof the box 0, substantially as herein shown and described, and for thepurpose set forth.

5. The box A, constructed with apertures M outside of the vertical wallsof box 0, and with crossed grooves N O in its bottom, substantially asherein shown and described, and for the purpose set forth.

6. The combination, with the united boxes 15 in shown and described, andfor the purpose 20 set forth.

J. H. BONN. ALFRED DE BEVOISE.

Witnesses:

J OHN G. BESSON, GEORGE J. Ducxnn.

